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Message-Id: <200711131008.56627.a1426z@gawab.com> Date: Tue, 13 Nov 2007 10:08:56 +0300 From: Al Boldi <a1426z@...ab.com> To: linux-kernel@...r.kernel.org Subject: top lies ? kloczek wrote: > Some data showed by top command looks like completly trashed. > Fragment from top output: > > Mem: 2075784k total, 2053352k used, 22432k free, 19260k buffers > Swap: 2096472k total, 136k used, 2096336k free, 1335080k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ SWAP nFLT > WCHAN COMMAND 14515 mysql 20 0 1837m 563m 4132 S 39 27.8 > 27:14.20 1.2g 18 - mysqld > > How it is possible that swap ussage is 136k and swapped out portion of (in > this case) mysqld process is 1.2g ? Welcome to OverCommit, aka OOM-nirvana. Try this: # echo 2 > /proc/sys/vm/overcommit_memory # echo 0 > /proc/sys/vm/overcommit_ratio But make sure you have enough swap. Thanks! -- Al - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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